![Daikin EWAP460MBYN [5/22] Internal wiring parts table](/img/pdf.png)
Daikin EWAP460MBYN [5/22] Internal wiring parts table
![Daikin EWAP460MBYN [5/22] Internal wiring parts table](/views2/1657092/page5/bg5.png)
EWAP400~540MBYNN
Packaged air-cooled water chillers
4PW22679-1B
Operation manual
4
■
Compressor thermal protectors
The compressor motors are equipped with thermal protectors
(Q*M). The protectors are activated when the compressor motor
temperature becomes too high. When temperature returns to
normal, the protectors reset automatically, but the controller
needs to be reset manually.
■
Fan motor thermal protector
The condenser fan motors are equipped with thermal protectors
(Q*F). The protectors are activated when the temperature
becomes too high. When temperature returns to normal, the
protectors reset automatically.
■
Flowswitch
The unit is protected by a flowswitch (S8L).
When the waterflow becomes lower than the minimum allowed
waterflow, the flowswitch shuts down the unit. When the
waterflow becomes normal, the protection resets automatically
but the controller still needs to be reset manually.
■
Discharge thermal protectors
The unit is equipped with discharge thermal protectors (S*T).
The protectors are activated when the temperature of the
refrigerant leaving the compressor becomes too high. When the
temperature returns to normal the protector resets automatically
and the controller needs to be reset manually.
■
Freeze-up protection
The freeze-up protection prevents the water in the evaporator
from freezing during operation. When the outlet water
temperature is too low, the controller shuts down the cicuit.
When the outlet water temperature returns to normal, the
controller needs to be reset manually.
When freeze-up protection occurs several times in a certain
period, the freeze-up alarm will be activated and the unit will be
shut down. The cause of freezing up should be investigated and
after outlet water temperature has risen enough, the alarm
indicator on the controller needs to be reset manually.
■
Low pressure safety
When the suction pressure of a circuit is too low, the circuit
controller shuts down the circuit. When the pressure returns to
normal, the safety device can be reset on the controller.
■
Pressure relief safety valve
The safety valve is activated when the pressure in the refrigerant
circuit becomes too high. If this occurs, shut down the unit and
contact your local dealer.
■
High pressure switch
Each circuit is protected by two high pressure switches (S*PH)
which measure the condenser pressure (pressure at the outlet
of the compressor). They are installed in the compressor
housing of the circuit. When the pressure becomes too high, the
pressure switches are activated and the circuit stops.
The switches are factory-set and may not be adjusted. When
activated, they must be reset by means of a screwdriver. The
controller still needs to be reset.
■
Reverse phase protector
The reverse phase protectors (R*P) prevent the screw
compressors from running in the wrong direction. If the
compressors do not start, two phases of the power supply must
be inverted.
Internal wiring - Parts table
Refer to the internal wiring diagram supplied with the unit. The
abbreviations used are listed below:
A1,A2..........** ....... Current transfo/A-meter
A1P........................ PCB controller
A11P...................... Expansion bord controller
B1P,B4P................. Low pressure transmitter for circuit 1, circuit 2
B2P,B5P................. High pressure transmitter for circuit 1, circuit 2
C1~C6 ................... Capacitor
E1HC,E2HC .......... Crankcase heater compressor circuit 1, circuit 2
E3H,E4H................ Evaporator heater circuit 1, circuit 2
F1U~F3U ... #.........Main fuses
F4U,F5U .... #.........Fuses for evaporator heater
F6B ........................Fuse for primary of TR1
F7B ........................Fuse for secondary of TR1
F8U ........................Surge proof fuse for A1P
F9B ........................Fuse for secondary of TR2
F12B,F14B.............Fuse for fanmotors
H1P............ * .........Indication lamp general operation
H2P............ * .........Indication lamp alarm
H3P............ * .........Indication lamp operation compressor
H5P............ * .........Changeable output
J1 ...........................Power supply
J2,J3,J6,J20...........Analog input
J4 ...........................Analog output
J5,J7,J8,J19...........Digital input
J11 .........................RS485 connection
J12~J18 .................Digital output
K1M,K4M ...............Linecontactor circuit 1, circuit 2
K2M,K5M ...............Deltacontactor circuit 1, circuit 2
K3M,K6M ...............Starcontactor circuit 1, circuit 2
K7F~K9F................Fancontactor
K17S,K18S ............Overcurrent relay circuit 1, circuit 2
K1A,K4A ................Auxiliary relay for safeties circuit 1, circuit 2
K2A,K5A ................Auxiliary relay compressor thermal protector
circuit 1, circuit 2
K3A,K6A ................Auxiliary relay for discharge thermal protector
circuit 1, circuit 2
K7A,K8A ................Auxiliary relay for safety of high pressure
circuit 1, circuit 2
L1~L3.....................Main supply terminals
M11F-M18F ...........Fan motors
M1C,M2C...............Compressor motor circuit 1, circuit 2
M1S,M2S ...............Stepless capacity control for compressor
circuit 1, circuit 2
PE ..........................Main earth terminal
Q11F-Q18F............Thermal protectors fan motors
Q1M,Q2M ..............Thermal protector compressor motor circuit 1,
circuit 2
R1,R2.....................Auxiliary resistence for feedback (R1F)
R1F,R2F.................Feedback resistance circuit 1, circuit 2
R1P,R2P.................Reverse phase protector circuit 1, circuit 2
R3T ........................Sensor for evaporator inlet water temperature
R4T,R6T.................Sensor for outlet water temperature circuit 1,
circuit 2
R5T ........................Sensor for ambient temperature
R8T ........................Sensor for evaporator outlet water temperature in
a DICN system
S1PH,S2PH ...........High pressure switch circuit 1, circuit 2
S3T,S4T .................Discharge thermal protector circuit 1, circuit 2
S5E ........................Emergency stop push button
S6S ............ * .........Changeable switch for remote function
(e.g. remote start/stop)
S8L,S10L ...............Flowswitch circuit 1, circuit 2
S9L............. #.........Contact that closes if the pump is working
S10S,S11L. * .........Changeable switch for remote function
(e.g. dual setpoint)
Содержание
- Operation manual 1
- Packaged air cooled water chillers 1
- Electrical specifications 2
- Important information regarding the refrigerant used 2
- Introduction 2
- Operation manual 2
- Technical specifications 2
- Description 3
- Escription 3
- Function of the main components 4
- Safety devices 4
- Internal wiring parts table 5
- Before operation 6
- Checks before initial start up 6
- General recommendations 6
- Operation 6
- Power supply connection and crankcase heating 6
- Water supply 6
- Digital controller 7
- Operation 7
- Peration 7
- Working with the unit 7
- Consulting actual operational information 8
- Switching the unit off 8
- Switching the unit on 8
- Switching units on off in a dicn system 8
- Adjusting the temperature setpoint 9
- Resetting the unit 9
- Advanced features of the digital controller 10
- All menus are directly accessible using the corresponding key on the digital controller the down arrow x on the display indicates that you can go to the next screen of the current menu using the h key the up arrow w on the display indicates that you can go to the previous screen of the current menu using the g key if c is displayed this indicates that you can either return to the previous screen or can go to the next screen 10
- Depending upon the settings in the user settings menu the 10
- Menu can either be entered directly or by means of the user password 10
- Menu protected by the user password allows a full customization of the units 10
- Readout menu 10
- Setpoint 10
- Setpoints menu 10
- This chapter gives an overview and a brief functional description of the screens provided by the different menus in the following chapter you will find how you can set up and configure the unit using the various menu functions 10
- Timers menu 10
- User setting 10
- User settings menu 10
- Additionally the number of safeties that already occured can be consulted on the first line of the history screens 11
- Along with the basic information more detailed information screens can be consulted while the safety menu is active press the q key screens similar to the following will appear 11
- Histor 11
- History menu 11
- Info menu 11
- Input outpu 11
- Input output menu 11
- Menu contains all the information concerning the latest shutdowns the structure of those menus is identical to the structure of the safeties menu whenever a failure is solved and the operator performs a reset the concerning data from the safeties menu is copied into the history menu 11
- Menu gives the status of all the digital inputs and the relay outputs of the unit 11
- Menu provides useful information for trouble shooting purposes the following screens contain basic information 11
- Safetie 11
- Safeties menu 11
- To check the actual value of the compressor startup timers and the stop timers 11
- To check the capacity mode and feedback of circuit 1 11
- To check the capacity mode and feedback of circuit 2 11
- To check the status of the changeable digital inputs note that for a unit in a dicn system the inputs apply to this unit it will be the remote input on the master unit however that will be determining for the operation of the unit 11
- To check the status of the fanspeed relays of circuit 1 11
- To check the status of the high pressure switch the reverse phase protector and overcurrent relay for circuit 1 11
- To check the status of the high pressure switch the reverse phase protector and the overcurrent relay for circuit 2 11
- To check the status of the power relays of circuit 1 11
- To check the status of the power relays of circuit 2 11
- To check the time and control mode at the moment of the unit shutdown 11
- To check whether or not the discharge thermal protector or the compressor thermal protector are activated for circuit 1 11
- To check whether or not the discharge thermal protector or the compressor thermal protector are activated for circuit 2 11
- To check whether or not the emergency stop device is active and if there s any water flow to the evaporator 11
- To check which was the evaporator outlet water temperature of the circuit and the thermostat step at the moment of shutdown 11
- To check which was the status of the compressors at the moment of shutdown 11
- To check which were the evaporator and condenser inlet water temperature and the evaporator outlet water temperature 11
- To check which were the pressures of circuit 1 at the moment of shutdown 11
- To check which were the pressures of circuit 2 at the moment of shutdown 11
- To check which were the total amount of running hours of the compressors and the ambient temperature at the moment of shutdown 11
- To consult additional information about the unit such as the unit type and the refrigerant used 11
- To consult information about the circuit 1 safety which caused the shutdown 11
- To consult information about the circuit 2 safety which caused the shutdown 11
- To consult information about the controller s software version 11
- To consult information about the dual pump which caused the shutdown 11
- To consult information about the network safety which caused the shutdown 11
- To consult information about the pcb 11
- To consult information about the unit safety which caused the shutdown 11
- To consult time and date information 11
- Defining and activating the control mode 12
- Defining the lead lag mode 12
- Defining the thermostat settings 12
- Entering the user settings menu 12
- Network menu 12
- User password menu 12
- Defining dual evaporator pump control 13
- Defining free cooling 13
- Defining the capacity limitation settings 13
- Defining the display settings 13
- Defining the pump control settings 13
- Defining the schedule timer 13
- Defining the floating setpoint settings 13
- Activating or deactivating the setpoints password 14
- Checking the actual value of the software timers 14
- Defining bms control 14
- Defining the network settings 14
- Checking the safety info and the unit status after a reset 15
- Checking the status of the inputs and outputs 15
- Consulting additional unit information 15
- Listing activated safeties and checking the unit status 15
- Changing the user password 16
- Roubleshooting 16
- Troubleshooting 16
- Aintenance 18
- Disposal requirements 18
- Maintenance 18
- Maintenance activities 18
- Inlet water temperature control outlet water temperature control 19
- Schedule timer example 19
- Thermostat parameters 19
- Floating setpoint working 20
- Free cooling on ambient temperature 20
- Free cooling on difference between inlet water evaporator temperature and ambient temperature 20
- Free cooling working 20
- Oftware structure 21
- Q q q q 21
- Pw22679 1b 22
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